Challenge: perform as many repetitions as possible (maintaining good form) for at least five days of the week. Keep track of your repetitions on your calendar or journal. Which day did you perform the greatest number of repetitions? Celebrate your improving strength and share your outcome with a friend or training partner.

Stand, with tall posture, facing the back of a chair, holding the back of the chair for balance. • Keep abs tight and slowly raise one leg slightly backward, keeping your knee straight until your foot is 3 to 4 inches off the floor. • Repeat 10 to 12 times with each leg.